ALC拼合墙板受剪性能试验研究和有限元分析
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摘要
蒸压轻质加气混凝土(ALC)拼合墙板由成品单板通过板间灌浆拼接,并以特定的连接工法(构造)和钢结构连成整体,其面内剪切性能不同于整面成型板材。遵循单板拼合界面连接、墙板、墙板与钢结构协同工作递进的试验研究方法,进行了4个界面纯剪试验、6个拼合墙板面内单调剪切试验以及1个墙板和钢框架协同工作的单调和反复加载试验。试验结果表明:影响墙板自身剪切性能的主要因素为拼合界面的粘结性能、连接工法的钩头螺栓布置方式、墙板和灌浆的材性;协同工作时具有代表性的底层墙板侧向刚度贡献率为21.6%;试验全程钩头螺栓连接完好。对各阶段试验进行了接触有限元数值分析,用接触法向刚度因子FKN模拟拼合界面粘结程度,结果和试验吻合较好。
Autoclaved lightweight concrete(ALC)spliced-connection wallboard system which links steel frame with hooked bolt connection method is composed of finished product boards with mortar cementing the seam,which shows different in-plane shear behavior compared with one-piece whole wallboard.Full-scale tests of 11 specimens including four spliced-connection interface shearing,six wallboards in-plane shearing under monotonic loading,and one steel frame lining with ALC-wallboards under monotonic and cyclic loading were performed in sequence of interface connection,wallboard itself and the harmonious performance.The results showed that 1)the factors influencing ALC-wallboard shear behavior were interface bond property of spliced-connection,arrangement mode of hooked bolt connection,and material property of wall-board and mortar;2)representative lateral stiffness contribution of first storey was 21.6% in harmonious performance test;3)the hooked bolt connection was in good condition in whole tests.Contact FEM analysis with normal penalty stiffness factor(FKN)simulating spliced-connection interface was performed.A satisfactory agreement was obtained comparing with experimental results.
Autoclaved lightweight concrete(ALC)spliced-connection wallboard system which links steel frame with hooked bolt connection method is composed of finished product boards with mortar cementing the seam,which shows different in-plane shear behavior compared with one-piece whole wallboard.Full-scale tests of 11 specimens including four spliced-connection interface shearing,six wallboards in-plane shearing under monotonic loading,and one steel frame lining with ALC-wallboards under monotonic and cyclic loading were performed in sequence of interface connection,wallboard itself and the harmonious performance.The results showed that 1)the factors influencing ALC-wallboard shear behavior were interface bond property of spliced-connection,arrangement mode of hooked bolt connection,and material property of wall-board and mortar;2)representative lateral stiffness contribution of first storey was 21.6% in harmonious performance test;3)the hooked bolt connection was in good condition in whole tests.Contact FEM analysis with normal penalty stiffness factor(FKN)simulating spliced-connection interface was performed.A satisfactory agreement was obtained comparing with experimental results.
引文
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[5]过镇海.钢筋混凝土原理[M].北京:清华大学出版社,1999.(GUO Zhenhai.The principle ofreinforced concrete[M].Beijing:Tsinghua UniversityPress,1999.(in Chinese))
[6]程才渊,吴明舜,苏宇峰,郑颐,李先林.伊通加气混凝土砌体抗压、弯曲抗拉、通缝抗剪的试验研究[J].四川建筑科学研究,2005,31(1):90-94.(CHENGCaiyuan,WU Mingshun,SU Yufeng,ZHENG Yi,LIXianlin.Experimental study on bearing,tension andshearing force of Yitong concrete masonry with sand andgas[J].Sichuan Building Science,2005,31(1):90-94.(in Chinese))
[7]美国ANSYS公司.ANSYS非线性分析指南[M].美国ANSYS公司,2000.(ANSYS company in American.ANSYS non-linear analysis guide[M].ANSYScompany in American,2000.(in Chinese))
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[9]袁群,刘健.新老混凝土粘结的剪切强度研究[J].建筑结构学报,2001,22(2):46-50.(YUAN Qun,LIU Jian.Study on adhesive shear strength of young onold concrete[J].Journal of Building Structures,2001,22(2):46-50.(in Chinese))
[10]田海.带ALC墙板和楼板的轻型钢框架在侧向荷载作用下的性能研究[D].上海:同济大学,2006.(TIAN Hai.Research on lateral behavior of lightweightsteel frame with in-filled ALC wallboard and floor[D].Shanghai:Tongji University,2006.(in Chinese))
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